From TF Wiki:
Despite being called “USA Edition”, the figures under this category are not quite the same as their American counterparts, enjoying different plastic colors or paint operations intended to be more accurate to their cartoon appearances. Because they are “USA Edition” toys presented in Hasbro’s 2008 Universe packaging, the figures in this category do not have the vacuum metalized plastic seen on the Henkei! Henkei! toys. They were released October 2, 2008.